A train X starts from A at 4 PM and reaches B at 5 PM. While another train Y…
2014
A train X starts from A at 4 PM and reaches B at 5 PM. While another train Y starts from B at 4 PM and reaches A at 5.30 PM. Two trains will cross each other at
- A.
4.36 PM
- B.
4.48 PM
- C.
4.42 PM
- D.
4.50 PM
Attempted by 26 students.
Show answer & explanation
Correct answer: A
Based on the given information:
Speed of Train X = d km/hr.
Speed of Train Y = d/1.5=2d/3 km/hr.
Relative speed = d+2d/3=5d/3 km/hr.
Time to cross = Distance/Relative Speed= d/(5d/3)= 3/5 hours.
3/5 hours = 36 minutes.
Since both trains start at 4 PM, they will cross each other at 4.36 PM.
The correct option is A. 4.36 PM.